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dec_neon: use vld1_dup(mem) rather than vdup(mem[0])

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should result in slightly less general purpose register use

Change-Id: I6069f49541392e56c8db2c28c8d1fdf88c1a1726
This commit is contained in:
James Zern 2015-05-16 10:30:04 -07:00
parent 8b63ac78e0
commit aa6065aedd
1 changed files with 3 additions and 3 deletions
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6
src/dsp/dec_neon.c
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@ -1241,7 +1241,7 @@ static void TransformWHT(const int16_t* in, int16_t* out) {
static void TransformAC3(const int16_t* in, uint8_t* dst) { static void TransformAC3(const int16_t* in, uint8_t* dst) {
static const int kC1_full = 20091 + (1 << 16); static const int kC1_full = 20091 + (1 << 16);
static const int kC2_full = 35468; static const int kC2_full = 35468;
const int16x4_t A = vdup_n_s16(in[0]); const int16x4_t A = vld1_dup_s16(in);
const int16x4_t c4 = vdup_n_s16(MUL(in[4], kC2_full)); const int16x4_t c4 = vdup_n_s16(MUL(in[4], kC2_full));
const int16x4_t d4 = vdup_n_s16(MUL(in[4], kC1_full)); const int16x4_t d4 = vdup_n_s16(MUL(in[4], kC1_full));
const int c1 = MUL(in[1], kC2_full); const int c1 = MUL(in[1], kC2_full);
@ -1283,7 +1283,7 @@ static void DC4(uint8_t* dst) { // DC
// TrueMotion (4x4 + 8x8) // TrueMotion (4x4 + 8x8)
static WEBP_INLINE void TrueMotion(uint8_t* dst, int size) { static WEBP_INLINE void TrueMotion(uint8_t* dst, int size) {
const uint8x8_t TL = vdup_n_u8(dst[-BPS - 1]); // top-left pixel 'A[-1]' const uint8x8_t TL = vld1_dup_u8(dst - BPS - 1); // top-left pixel 'A[-1]'
const uint8x8_t T = vld1_u8(dst - BPS); // top row 'A[0..3]' const uint8x8_t T = vld1_u8(dst - BPS); // top row 'A[0..3]'
const int16x8_t d = vreinterpretq_s16_u16(vsubl_u8(T, TL)); // A[c] - A[-1] const int16x8_t d = vreinterpretq_s16_u16(vsubl_u8(T, TL)); // A[c] - A[-1]
int y; int y;
@ -1508,7 +1508,7 @@ static void DC16NoLeft(uint8_t* dst) { DC16(dst, 1, 0); }
static void DC16NoTopLeft(uint8_t* dst) { DC16(dst, 0, 0); } static void DC16NoTopLeft(uint8_t* dst) { DC16(dst, 0, 0); }
static void TM16(uint8_t* dst) { static void TM16(uint8_t* dst) {
const uint8x8_t TL = vdup_n_u8(dst[-BPS - 1]); // top-left pixel 'A[-1]' const uint8x8_t TL = vld1_dup_u8(dst - BPS - 1); // top-left pixel 'A[-1]'
const uint8x16_t T = vld1q_u8(dst - BPS); // top row 'A[0..15]' const uint8x16_t T = vld1q_u8(dst - BPS); // top row 'A[0..15]'
// A[c] - A[-1] // A[c] - A[-1]
const int16x8_t d_lo = vreinterpretq_s16_u16(vsubl_u8(vget_low_u8(T), TL)); const int16x8_t d_lo = vreinterpretq_s16_u16(vsubl_u8(vget_low_u8(T), TL));